/*
 * Copyright (C) 2010 Yury Kudryashov.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package name.kudryashov.stats;

import java.util.concurrent.atomic.AtomicLong;

/**
 * Represents a simple counter with no additional statistics except for the counter itself.
 * <p>
 * The counter can be negative: no checks are performed on decrement.
 */
public class SimpleCounter implements Counter {

    private final AtomicLong value = new AtomicLong(0);

    public void inc() {
        value.incrementAndGet();
    }

    public void dec() {
        value.decrementAndGet();
    }

    public void clear() {
        value.set(0);
    }

    public long value() {
        return value.get();
    }
}
